In conversations with atheists in Berkeley, they often raised the problem of evil and suffering as a problem for Christians. It's not likely, they argued, that God exists given the amount of pain and suffering in the world (actually, several were trying to push the logical problem of evil).
However, the problem of evil is a problem for atheists as well. Last week, we (New Covenant Community Church's college group and I) spent some time dialoguing with U.C. Berkeley's student atheist club, called S.A.N.E. In this video, one atheist student attempts to explain what suffering amounts to in an atheistic universe and what he would say to a young girl who is suffering: